When solving an equation with two variables, replace the variables with the values given and then solve the now variable-free equation. (Remember order of operations, PEMDAS, Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.)
Solve -2c - c = 7c + 2z - 5 for c in terms of z.
| -\(\frac{1}{3}\)z + \(\frac{2}{3}\) | |
| -\(\frac{1}{3}\)z + \(\frac{5}{9}\) | |
| z + 7 | |
| -\(\frac{1}{2}\)z + 1 |